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360 Harbor Ln, Key Biscayne FL 33149, photo 1 of 25

$9,950,000

360 Harbor Ln, Key Biscayne FL 33149

6 beds · 5.5 baths · 4,341 sq ft · Single Family Residence · Active

MLS# A12104430 · Listing courtesy of Coldwell Banker Realty

Facts

Bedrooms
6
Bathrooms
5 full, 1 half
Living area
4,341 sq ft
Price per sq ft
$2,292
Lot
9,300 sq ft
Type
Single Family Residence
Year built
2025
Exposure
Northeast
View
Garden, Pool
Furnished
Unfurnished
Taxes
$31,314 (2025)
Listed
Oct 19, 2026

About this residence

Discreetly set in the heart of Key Biscayne — one of Miami’s most coveted island communities — this elegant modern two-story residence offers 5,156 SF of total space on a lush 9,300 SF lot with 6 bedrooms, 5.5 bathrooms, and a private office, perfectly balancing refined design with the relaxed island lifestyle. A travertine staircase entry and wrap-around porch with modern glass railings set a sophisticated tone, leading inside to soaring ceilings, herringbone oak floors by Listone Giordano, floor-to-ceiling sliding doors, and Lutron lighting. The open-concept living, dining, and family areas flow seamlessly to the outdoors. The chef’s kitchen showcases a striking fluted marble island with curved-edge countertops, floor-to-ceiling cabinetry by Design It, and a full Wolf and Sub-Zero appliance suite. The primary suite features a private terrace, dual custom walk-in closets, a dry sauna, and a show-stopping bath with aquamarine quartzite sourced from ARCA, dual Waterworks vanities, and a frameless glass shower. Outside, a covered terrace with fluted wood-paneled ceiling, summer kitchen with built-in grill and pizza oven, and a heated saltwater pool with marble deck and Baja ledge create the ultimate island retreat. Professionally designed landscaping and enchanting exterior uplighting illuminate the lush gardens, creating picturesque views through the home’s expansive glass walls, particularly after sunset. Integrated sound and four AC units complete this exceptional offering.

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Location

360 Harbor Ln, Key Biscayne FL 33149Open in Google Maps

Placed from the listing’s coordinates in the MLS. The street map loads from OpenStreetMap when opened. Coastline © OpenStreetMap contributors.

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The data relating to real estate for sale on this web site comes in part from the participating Associations/MLSs and Miami Association of Realtors. The information being provided is for consumers' personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Information is deemed reliable but not guaranteed.

Listing data last updated 10/19/2026, 4:30:55 PM ET.

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